EP2216688A3 - Development device, process unit, and image forming apparatus - Google Patents

Development device, process unit, and image forming apparatus Download PDF

Info

Publication number
EP2216688A3
EP2216688A3 EP10151059.2A EP10151059A EP2216688A3 EP 2216688 A3 EP2216688 A3 EP 2216688A3 EP 10151059 A EP10151059 A EP 10151059A EP 2216688 A3 EP2216688 A3 EP 2216688A3
Authority
EP
European Patent Office
Prior art keywords
bearing member
guide
carrier
development device
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10151059.2A
Other languages
German (de)
French (fr)
Other versions
EP2216688A2 (en
Inventor
Hirobumi Ooyoshi
Yoshiyuki Shimizu
Osamu Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of EP2216688A2 publication Critical patent/EP2216688A2/en
Publication of EP2216688A3 publication Critical patent/EP2216688A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0813—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by means in the developing zone having an interaction with the image carrying member, e.g. distance holders
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0818—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the structure of the donor member, e.g. surface properties

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Electrophotography Configuration And Component (AREA)

Abstract

In a development device (6), a developer carrier (3) supplies a developer to an electrostatic latent image formed on an image carrier (1) to develop the electrostatic latent image into a toner image. A bearing member (9) rotatably supports the developer carrier (3) axially. A biasing member (8) is provided on a side of the bearing member (9) opposite the image carrier (1) to apply a force to the bearing member (9) to move the bearing member (9) and the developer carrier (3) toward the image carrier (1). A guide. (10) is disposed about the bearing member (9) to enable the bearing member (9) to move therebetween and guide the bearing member (9) toward the image carrier (1). The bearing member (9) includes a rotatable part (9a; 9c) to rotate and slide over the guide (10) while contacting the guide (10).
EP10151059.2A 2009-02-06 2010-01-19 Development device, process unit, and image forming apparatus Withdrawn EP2216688A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009026490A JP5305008B2 (en) 2009-02-06 2009-02-06 Developing device, process unit, and image forming apparatus

Publications (2)

Publication Number Publication Date
EP2216688A2 EP2216688A2 (en) 2010-08-11
EP2216688A3 true EP2216688A3 (en) 2015-06-10

Family

ID=42235759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10151059.2A Withdrawn EP2216688A3 (en) 2009-02-06 2010-01-19 Development device, process unit, and image forming apparatus

Country Status (4)

Country Link
US (1) US8019259B2 (en)
EP (1) EP2216688A3 (en)
JP (1) JP5305008B2 (en)
CN (1) CN101799652A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101344744A (en) * 2008-08-15 2009-01-14 珠海赛纳科技有限公司 Method and device for controlling distance between photosensitive element and developing element of carbon powder box
JP2011048133A (en) 2009-08-27 2011-03-10 Ricoh Co Ltd Process cartridge and image forming apparatus
JP5811336B2 (en) 2010-11-08 2015-11-11 株式会社リコー Image forming apparatus
JP6452353B2 (en) * 2014-08-29 2019-01-16 キヤノン株式会社 Multicolor molded parts and cartridges
US9612547B2 (en) 2015-03-05 2017-04-04 Ricoh Company, Ltd. Developing device, process cartridge, and image forming apparatus
JP6651906B2 (en) * 2016-02-29 2020-02-19 ブラザー工業株式会社 Drum unit
JP6957199B2 (en) * 2017-05-19 2021-11-02 キヤノン株式会社 Photoreceptor unit
JP6922463B2 (en) * 2017-06-19 2021-08-18 富士フイルムビジネスイノベーション株式会社 Conveyor, charging and image forming equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003280375A (en) * 2002-03-20 2003-10-02 Ricoh Co Ltd Image forming device

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0830100A (en) * 1994-07-15 1996-02-02 Fujitsu Ltd Electrophotographic device
JPH09269650A (en) 1996-04-01 1997-10-14 Matsushita Electric Ind Co Ltd Image forming device
JP2001056587A (en) 1999-08-19 2001-02-27 Ricoh Co Ltd Image forming device
US6549736B2 (en) * 2000-01-19 2003-04-15 Canon Kabushiki Kaisha Process cartridge, engaging member therefor and method for mounting developing roller and magnet
JP2002156831A (en) 2000-11-17 2002-05-31 Canon Inc Process cartridge, engaging member and attaching method
JP4220889B2 (en) * 2003-11-27 2009-02-04 株式会社リコー TRANSFER METHOD, TRANSFER DEVICE, IMAGE FORMING METHOD, AND IMAGE FORMING DEVICE
JP4610468B2 (en) * 2005-11-04 2011-01-12 株式会社リコー Toner recovery device, image forming unit, and image forming apparatus
US20070104763A1 (en) * 2005-11-10 2007-05-10 Navinta Llc Composition of fentanyl citrate oral solid transmucosal dosage form, excipient and binding material therefore, and methods of making
JP4611190B2 (en) * 2005-12-20 2011-01-12 株式会社リコー Toner recovery device, process cartridge, and image forming apparatus
JP5176345B2 (en) * 2006-04-24 2013-04-03 株式会社リコー Conveying device, process cartridge, image forming apparatus, and image forming method
JP5110569B2 (en) * 2006-11-02 2012-12-26 株式会社リコー Developing device, process cartridge, image forming apparatus
US7676184B2 (en) * 2006-12-04 2010-03-09 Ricoh Company, Ltd. Developing apparatus
JP5110866B2 (en) * 2006-12-13 2012-12-26 株式会社リコー Process cartridge and image forming apparatus
JP4892330B2 (en) * 2006-12-18 2012-03-07 株式会社リコー Development device
JP2008175956A (en) * 2007-01-17 2008-07-31 Ricoh Co Ltd Powder conveying device, toner conveying device, process cartridge and image forming apparatus
JP5039390B2 (en) * 2007-02-02 2012-10-03 株式会社リコー Process cartridge and image forming apparatus
US8275285B2 (en) * 2007-02-26 2012-09-25 Ricoh Company, Ltd. Process cartridge and image forming apparatus
JP4833117B2 (en) * 2007-03-06 2011-12-07 株式会社リコー Latent image carrier unit and image forming apparatus
JP4890338B2 (en) * 2007-04-25 2012-03-07 株式会社リコー Toner container and image forming apparatus
JP4680232B2 (en) * 2007-05-07 2011-05-11 株式会社リコー Process unit and image forming apparatus
JP5076698B2 (en) 2007-07-17 2012-11-21 株式会社Ｇｓユアサ battery
US8260186B2 (en) * 2007-07-18 2012-09-04 Ricoh Company, Limited Toner cartridge with refillable fresh and residual toner chambers, process cartridge, and method of making toner cartridge reusable
JP5075578B2 (en) * 2007-10-30 2012-11-21 株式会社リコー Seal member, developing device, process cartridge, and image forming apparatus
JP5359211B2 (en) * 2007-12-17 2013-12-04 株式会社リコー Waste toner collecting device, process cartridge, and image forming apparatus
US8103195B2 (en) * 2007-12-20 2012-01-24 Ricoh Company, Ltd. Toner agitating unit, toner hopper, process cartridge, and image forming apparatus
JP5339026B2 (en) * 2007-12-28 2013-11-13 株式会社リコー Developing device, process unit, and image forming apparatus
JP2009162853A (en) * 2007-12-28 2009-07-23 Ricoh Co Ltd Powder transport screw, development device, process unit and image forming apparatus
JP5061044B2 (en) * 2008-06-25 2012-10-31 株式会社リコー Image forming apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003280375A (en) * 2002-03-20 2003-10-02 Ricoh Co Ltd Image forming device

Also Published As

Publication number Publication date
JP5305008B2 (en) 2013-10-02
US20100202796A1 (en) 2010-08-12
JP2010181739A (en) 2010-08-19
US8019259B2 (en) 2011-09-13
EP2216688A2 (en) 2010-08-11
CN101799652A (en) 2010-08-11

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